January 9 » Treaty of Jassy between Russian and Ottoman Empire is signed.
January 25 » The London Corresponding Society is founded.
February 20 » The Postal Service Act, establishing the United States Post Office Department, is signed by United States President George Washington.
April 21 » Tiradentes, a revolutionary leading a movement for Brazil's independence, is hanged, drawn and quartered.
September 2 » During what became known as the September Massacres of the French Revolution, rampaging mobs slaughter three Roman Catholic bishops, more than two hundred priests, and prisoners believed to be royalist sympathizers.
October 12 » The first celebration of Columbus Day is held in New York City.
Day of marriage February 6, 1818
The temperature on February 6, 1818 was about 1.0 °C. Wind direction mainly southwest. Weather type: betrokken mist. Source: KNMI
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De Republiek der Verenigde Nederlanden werd in 1794-1795 door de Fransen veroverd onder leiding van bevelhebber Charles Pichegru (geholpen door de Nederlander Herman Willem Daendels); de verovering werd vergemakkelijkt door het dichtvriezen van de Waterlinie; Willem V moest op 18 januari 1795 uitwijken naar Engeland (en van daaruit in 1801 naar Duitsland); de patriotten namen de macht over van de aristocratische regenten en proclameerden de Bataafsche Republiek; op 16 mei 1795 werd het Haags Verdrag gesloten, waarmee ons land een vazalstaat werd van Frankrijk; in 3.1796 kwam er een Nationale Vergadering; in 1798 pleegde Daendels een staatsgreep, die de unitarissen aan de macht bracht; er kwam een nieuwe grondwet, die een Vertegenwoordigend Lichaam (met een Eerste en Tweede Kamer) instelde en als regering een Directoire; in 1799 sloeg Daendels bij Castricum een Brits-Russische invasie af; in 1801 kwam er een nieuwe grondwet; bij de Vrede van Amiens (1802) kreeg ons land van Engeland zijn koloniën terug (behalve Ceylon); na de grondwetswijziging van 1805 kwam er een raadpensionaris als eenhoofdig gezag, namelijk Rutger Jan Schimmelpenninck (van 31 oktober 1761 tot 25 maart 1825).
March 30 » Physicist Augustin Fresnel reads a memoir on optical rotation to the French Academy of Sciences, reporting that when polarized light is "depolarized" by a Fresnel rhomb, its properties are preserved in any subsequent passage through an optically-rotating crystal or liquid.
April 5 » In the Battle of Maipú, Chile's independence movement, led by Bernardo O'Higgins and José de San Martín, win a decisive victory over Spain, leaving 2,000 Spaniards and 1,000 Chilean patriots dead.
April 19 » French physicist Augustin Fresnel signs his preliminary "Note on the Theory of Diffraction" (deposited on the following day). The document ends with what we now call the Fresnel integrals.
October 20 » The Convention of 1818 is signed between the United States and the United Kingdom, which settles the Canada–United States border on the 49th parallel for most of its length.
December 3 » Illinois becomes the 21st U.S. state.
December 13 » Cyril VI of Constantinople resigns from his position as Ecumenical Patriarch.
Day of death April 22, 1869
The temperature on April 22, 1869 was about 17.8 °C. The air pressure was 1 kgf/m2 and came mainly from the southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 39%. Source: KNMI
From June 4, 1868 till January 4, 1871 the Netherlands had a cabinet Van Bosse - Fock with the prime ministers Mr. P.P. van Bosse (liberaal) and Mr. C. Fock (liberaal).
January 27 » Boshin War: Tokugawa rebels establish the Ezo Republic in Hokkaidō.
March 6 » Dmitri Mendeleev presents the first periodic table to the Russian Chemical Society.
May 15 » Women's suffrage: In New York, Susan B. Anthony and Elizabeth Cady Stanton form the National Woman Suffrage Association.
September 24 » Gold prices plummet after President Grant orders the Treasury to sell large quantities of gold after Jay Gould and James Fisk plot to control the market.
November 11 » The Victorian Aboriginal Protection Act is enacted in Australia, giving the government control of indigenous people's wages, their terms of employment, where they could live, and of their children, effectively leading to the Stolen Generations.
November 22 » In Dumbarton, Scotland, the clipper Cutty Sark is launched
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I164936.php : accessed February 13, 2026), "Sietze Alberts Sintniklaas (1792-1869)".
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